Sewing-machine attachment.



I. S. JOHNSTON.

I SEWING MACHINE ATTACHMENT. APPLICATION FILED JUNE II. IMO. I 1,191,079. r Patented July 11, 1916.

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JAMES s. onns'roiv, or urroannw IYGBKL SEWING-MACHINE ATTACHMENT.

To ali-whomit may concern:

Be it known that 1, JAMES S. JOHNSTON, a citizen of the United States, residing in Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in the Art of Sewing Machine Attachments, of which the following is a specification.

This invention has reference to the sewing machine art, and relates more particularly to an improvement in the arrangement and construction of elements constituting certain attachments that are used in that class of sewing machines by'which over-seaming is accomplished.

One of the objects of the inventive features of this case, is to provide for the proper guidance and care of the work while it is in the location of, and immediately before it reaches the stitching mechanism or needle, whereby the resultant seam will be properly placed, relatively to the body of the work. This feature is effected by means of movably mounted guiding members. Heretofore in devices of this character, the guiding members have apparently been fixed with relation to the body of the attachment, with the result, that during the passage of the goods over the guide, there would be a crowding or rufiiing of the same. This undesirable condition in the goods, would become fixed, by reason of the proximity of the same to the stitch, which immediately followed.

The above features are illustrated in the accompanying drawings in which;

Figure 1 is a plan view of a head, employed in a sewing machine, showing a rotatable guide journaled in the wall of the said head; Fig. 2 is a section taken on the line 22 of Fig. 1; Fig 3 is a plan view in detail of a plate employed, showing a rotatable guide mounted also in the body thereof; Fig. 4: is a sectional view taken on the line 41- 1 of Fig. 3; Fig. 5 is a side elevation, showing partsin section of a presser-foot employed; Fig. 6 is a plan view of presser-foot shown in Fig. 5, parts belng in section. 1 Fig. 7 all the parts in assembled relation.

Referring more particularly to the drawings, a head 7 of an arm, not shown, of a sewing machine, such as hereinbefore referred to, is provided with the usual studs 8 and 9, for insertion into the sockets of said arm. The head 7 is also provided with a Specification of LettersPatent.

the

is a side elevation, showing Patented July 11, 19216.,

Application filed June 11, 1910. Serial No. 566,463. e

recess 10. The frontwall 11 of the head 7 15 provided with a recess 12, having in its walls at ,1,5 and 16, bearings, whereby to ournala guide 13 provided with an annular recess 14'to accommodate the bulky part of the seam during the movement of the goods or fabric as the same approaches the stitchng mechanism. The recess 10 of the head 7 is covered by a plate 17 adapted to be secured in position by the screws that pass through the openings 18 and 19. The plate 17 has a recess 20 inwhich is suitably journaled a rotatably mounted guide 21 having an annular recess 2.] The guides 21 and 13 rotate along the under surface of the goods, the one in advance of the other, whereby to make an easy approach for the goods to the stitching mechanism. The presser-foot is bifurcated for the suitable'mounting in a rotatable manner of the guide 23 having a knife edge 24 adapted to serve the function of separating the goods, on each side of the main seam, whereby to facilitate the laying of the edges of the goods, so that the same will positively come under the operation of the stitching mechanism. It will be observed, that the annular groove 22 in the guide 21 journaled in the plate 17, will accommodate the knife edge 24 of the guide 23 of the presser-foot,'when the parts are assembled in operative relation.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: r

1. In an attachment for sewing machines, the combination of a head, a plate secured to said head, a revoluble guide in said plate, an annular groove in said guide, a presserfoot, and a guide having a knife edge mounted in said presser-foot, adapted to project into the annular groove in said guide to to project into the annular groove in said.

guide in said plate, whereby to separate the goods, passed through the machine, along either side of the main sea-m thereof.

guide in said plate, whereby to separate the goods passed through the machine, along either side of the main seam thereof.

Signed at Utica, in the county of Oneida, and State of New York, June, 1910. 1

JAMES S. JOHNSTON.

Witnesses:

ED. W. BARNACLO, S. I. DEVINE. 

